We determine the fine spectrum of the operator B(r, s, t) defined by a band matrix over the sequence spaces `1 and bv. This generalizes the spectrum of the second order difference operator âˆ†2 andâ€¦ (More)

We determine the fine spectrum of the operator B(r, s, t) defined by a triple-band matrix over the sequence spaces c0 and c. This generalizes the spectrum of the second-order difference operator 12â€¦ (More)

Abstract The sequence spaces c and cs have recently been introduced in [13] and [9], respectively, as the sets of all sequences whose Î›âˆ’ transforms are in the spaces c and cs, respectively. The mainâ€¦ (More)

The present paper is concerned with the concept of the dual matrix sequences of the new sort which is introduced by Altay and BaÅŸar [2], for the ordinary summability methods. Thus, some classes ofâ€¦ (More)